itchy skin on cycle

Doc,

I´m using Iforce Bold200 4 caps and Prododrol 5 caps a day. Also using Milk Thistle, Sam-e and I3C. Been on cycle for 3 weeks. Been having very itchy skin, especially the scalp and forearms, when I stratch my forearms I get little red bumbs. Is this something I should worry about or just try an anti-histamine and finish my cycle?